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Hi, I have no idea how to know which part exactly the problem from can you please give me some steps to follow in order to detect faulty part or how to fix this problem.

I reset the engine light multiple times but it came back after couple of hours only, I sent the car to a lot of guys but no one was able to fix it.

Appreciate your help.

Vehicle: 2007, Gold,1.6L

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Hi there,

This code indicates an issue with the EVAP system. Here is a list of possible causes.

P0451 KIA - EVAP Emission System- Pressure Sensor Range/Performance

Read more: https://www.autocodes.com/p0451_kia.html

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